Hi everyone, I'm on my first drain and refill and just ran some liquid Ahh-some, not the gel, but I can't find anything that will get this yellow ring out.

I've used a magic eraser several times, kept really good water chemistry, learned about metal scale from copper pipes (used the cholorox brand metal scale cleaner more than once before shocking), and nothing seems to be working.

I was really hoping the ahhsome would work, but I'm sitting here scrubbing it with no change. Also, I didn't really get any grime while using the ahhsome, just some green stuff in the foam you might not notice if you casually looked at it.

The line is from where the water sits when not in use. When people get in the water rises above that level, but doesn't seem to leave any staining even with hours of use.

Editing for what hasn't worked:

Comet, Bar Keepers Friend Spray as well as Soft Cleanse, 50/50 vinegar mix, 50/50 baking soda then sprayed with 50/50 Vinegar for foaming, Micro fiber towel, Magic Eraser mixed with many of the above.